Machine for cement lasting

ABSTRACT

A lasting machine that applies cement into the corner between a portion of the margin of an upper mounted on a last and an insole located on the last bottom and that wipes the margin portion against the insole so as to cementatiously attach the wiped margin portion to the insole.

United States Patent 1191 Vornberger Nov. 11, 1975 MACHINE FOR CEMENTLASTING [75] Inventor: Walter Vornberger, Tewksbury,

Mass.

[73] Assignee: International Shoe Machine Corporation, Nashua, NH.

. [62] Division of Ser. No. 386.l29. Aug.,6, 1973. Pat. No.

52 us. c1 .L 118/7; 118/411 5-1 1111. Bosc 5/02 [58] Field of Search118/410, 411, 315, 242, 118/7, 9. 412, 221

[56] References Cited UNITED STATES PATENTS 2.0l4.472 9/[935 Frenchll8/4ll X 3.3041563 2/1967 Fino l [ti/4H) X Primur Eraminer-John P.McIntosh Attorney, Agent, or FirmAlbert Gordon [57] ABSTRACT A lastingmachine that applies cement into the corner between a portion of themargin of an upper mounted on a last and an insole located on the lastbottom'and that wipes the margin portion against the insole so as tocementatiously attach the wiped margin portion to the'insole.

I 3 Claims, 23 Drawing Figures US. Patent Nov. 11, 1975 Sheet1of153,918,394

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U.S. Patent Nov. 11, 1975 Sheet20f 15 3,918,394

U.S Patant Nov. 11, 1975 Sheet 3 of 15 3,918,394

U.S. Patent Nov. 11,1975 Sheet4of15 3,918,394

US. Patent Nov. 11, 1975 Sheet50f15 3,918,394

U.S. Patant Nov. 11,1975 Sheet60f 15 3,918,394

US. Patent N0v.1l, 1975 Sheet7of15 3,918,394

U.S. Patent Nov. 11, 1975 Sheet 9 of 15 3,918,394

vON

US. Patent Nov. 11,1975 Sheet 10 of 15 3,918,394

U.S. Patent Nov. 11, 1975 Sheet 13 of 15 3,918,394

US. Patent Nov. 11,1975 Sheet 14 of 15 3,918,394

38 m2 3? Illl m? T m m l @Qw HUWH l I I l l I mow U.S. Patent Nov.11,1975 Sheet 15 of15 3,918,394

T m 4|s MACHINE FOR CEMENT LASTING This is a division of applicationSer. No. 386,129, filed Aug. 6, 1973, now U.S. Pat. No. 3,831,216

BACKGROUND AND SUMMARY OF THE INVENTION This invention is directed toimprovements over the cement lasting machine disclosed in U.S. Pat.applications Ser. No. 227,376, filed Feb. 18, 1972, now U.S. Pat. No.3,775,797, and Ser. No. 325,701, filed Jan. 22, 1973, now Pat. No.3,758,904.

The aforementioned machine inlcudes an arrangement for supporting bottomup a shoe assembly formed of a last having an upper mounted thereon andan insole located on its bottom with the opposite side portions of theupper margin extending upwardly of the insole. Lasting instrumentalitieson each side of the support arrangement are caused to first engage theopposite side portions of the upper and then wipe the margins of theseupper portions against the insole. The lasting instrumentalities areeach mounted for inwardoutward movement on a base, and the bases arelocated on opposite sides of and outwardly of the support arrangementwith each base also being mounted for inward-outward movement. Initiallyeach base is located in an outer position with respect to the supportarrangement, so that the shoe assembly can be readily placed on thesupport arrangement, and each lasting instrumentality is in an outerposition with respect to its associated base. The bases are then movedinwardly, together with the lasting instrumentalities, to inner basepositions wherein the lasting instrumentalities are close to but not inengagement with the sides of the shoe assembly. This is followed by amovement of the lasting instrumentalities inwardly of their outerpositions on the bases so as to enable them to engage the opposite sideportions of the upper and wipe the upper margin portions against theinsole.

In the aformentioned machine, the lasting instrumentalities, when thebases have completed their inward movement, must always be disengagedfrom the shoe assembly and spaced a desired close distance from the shoeassembly. With the support arrangement of the aforementioned machine,each lasting instrumentality, when its associated base has completed itsinward movement, will be a different distance from the shoe assembly ormay actually engage the shoe assembly depending on whether the the shoeassembly is for a right foot or for a left foot due to the differencesin the asymmetrical constructions of the left foot and the right footshoe assemblies. In order to overcome this difficulty and to insure thatthe lasting instrumentalities are spaced the desired distance from thesides of the shoe assembly regardless of whether a left foot shoeassembly or a right foot shoe assembly is being operated on, themachine, in accordance with a first aspect of this invention, has beenimproved by providing a mechanism for selectively moving the part of thesupport arrangement that supports the toe portion of the shoe assemblylaterally in one of two opposite lateral directions. I

In the aforementioned machine, the wiping of the opposite side portionsof the upper margin against the insole is performed by lasting tools orstraps that first apply relatively light back-up forces to the marginportions to fold them part way toward the insole. After this, cementnozzles are caused to travel along the sides of the insole periphery andoutwardly thereof to the extent permitted by the margin portions, whichare backed up by the lasting tools or straps, and to apply cement intothe corner, between the margin portions and the insole periphery. Thisis followed by causing the lasting tools or straps to apply relativelyheavy wiping forces to the margin portions to wipe the margin portionsagainst the insole and attach them to the insole by way of the cement.The purpose of having the margin portions folded part way toward theinsole during the travel ofthe nozzles and the extrusion of cementthrough the nozzles is to cause the folded margin portions to create abarrier between the upper margin and the insole that inhibits thecreeping of cement between the margin and the insole and then betweenthe upper and the sides of the last. Shoe assemblies are so constructedthat one side of the shoe assembly has a'relatively pronounced reentrantportion and other side of the shoe assembly has a less pronouncedreentrant portion. The side of the shoe assembly having the relativelypronounced reentrant portion is different for left foot shoe assembliesand right foot shoe assemblies. The angle formed between the side of thelast and the bottom of the last on the side of the shoe assembly havingthe relatively pronounced reentrant portion is an acute angle which issmaller than the angle, which is close to a right angle, formed betweenthe other side of the last and the bottom of the last. Therefore, thefolding of the upper margin part way towards the insole on the side ofthe shoe assembly having the relatively pronounced reentrant portionisneeded to create the barrier between the upper margin and the insolewhile this folding is not needed to create the barrier on the other sideof the shoe assembly. Moreover the folding of the margin part way towardthe insole on the side of the shoe assembly having the less pronouncedreentrant portion tends to prevent the nozzle traveling along this sideof the shoe assembly from reaching the periphery of the insole in thecorner in which it is traveling which is undesirable for the subsequentcementatious attachment of the upper margin to the insole. In order toovercome this problem, in a second aspect of the invention only thelasting tool or strap on the side of the shoe assembly having therelatively pronounced reentrant portion is caused to apply therelatively light back-up force to fold the upper margin part way towardthe insole.

The aforme'ntioned machine is intended to operate on a shoe assembly inwhich the upper margin of at least one end portion of the shoe has beenwiped against the insole and to apply cement by a nozzle along a courseof the upper margin that extends rearwardly of a boundary between anunwiped upper margin portion and the wiped end margin portion. Thenozzle is connected to a yieldable drive means to effectforward-rearward movement of the nozzle and is caused to be located in astarting position in the corner between the unwiped margin portion andthe corresponding portion of the insole periphery a particular distancerearward of the boundary. The drive means is then released to move thenozzle forwardly while the nozzle stays in the corner until the nozzlearrives at the boundary. Concomitantly with the arrival of the nozzle atthe boundary, a reversing mechanism is actuated to cause the drive meansto move the nozzle rearwardly while the nozzle stays in the corner andto cause cement to be extruded from the nozzle during its rearwardmovement. With this arrangement, the particular distance between thestarting position and the boundary varies in accordance with the lengthof the shoe assembly and the forward-rearward location of the actuatorfor the reversing mechanism therefore has to be adjusted for each shoeassembly length.

In a third aspect of the invention, the inconvenience referred to at theend of the preceding paragraph is overcome by actuating the reversingmechanism a predetermined time after the drive means is released whichtime is equal to or greater then the minimum time it takes for thenozzle to move forwardly from the starting position to the boundary.Should the nozzle arrive at the boundary before the reversing mechanismis actuated, it will pause at the boundary, due to meeting resistance toforward movement at the boundary and due to its being driven forwardlyby a yieldable drive means, until the reversing mechanism is actuated.

Each lasting instrumentality of the aforementioned machine is comprisedofa plurality of separated side by side heightwise extending straps. Inthe machine operation, the lasting straps are caused to so engage theshoe assembly that a top segment of each strap extends upwardly of theinsole and outwardly of a portion of the upper margin. A nozzle is thencaused to travel along the insole periphery while yieldable downward andoutward forces are applied to the nozzle and cement is extruded throughthe nozzle to cause the nozzle to bear against the insole and the marginportion and to enable cement to be extruded into the corner between themargin portion and the insole. After this, the nozzle is moved inwardlyof the margin and upwardly of the insole and the top segments of thelasting straps are folded downwardly and inwardly against the insole towipe the margin portion against the insole and attach it to the insoleby way of the cement.

Due to the separation between the lasting straps, the nozzle has atendency to snag and get caught in the separation between the lastingstraps and not move smoothly along the upper margin. In a fourth aspectof the invention, this difficulty is overcome be making that portion ofthe lasting straps that extend upwardly of the bottom of the insole whenthe lasting-straps engage the shoe assembly integral instead ofseparated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an isometric view of themachine taken from the front of the machine;

FIG. 2 is an isometric view of the lasting instrumentalities of themachine;

FIG. 3 is an isometric view taken from a side of the machine, of acement applying mechanism of the machine;

FIG. 4 is an exploded isometric view of the support arrangement of themachine;

FIG. 5 is an isometric view ofa portion of the support arrangement;

FIG. 6 is a view taken along the line 66 of FIG. 4;

FIG. 7 is a partially sectional view of a lasting instrumentality;

FIG. 8 is a plan view of the cement applying mechanism;

FIG. 9 is a plan view of a drive mechanism of the cement applyingmechanism for effecting movement in forward-rearward directions of thecement nozzles;

FIG. 10 is a view taken along the line l0l0 of FIG.

FIG. 11 is a view taken along the line 1l-ll of FIG.

FIG. 12 is a side elevation, partially in section, taken along the line1212 of FIG. 8;

FIG. 13 is a partially sectional view taken along the line 13-13 of FIG.12;

FIG. 14 is a section taken along the line l414 of FIG. 13;

FIG. 15 is a section taken along the line 15-15 of FIG. 13;

FIG. 16 is a section taken along the line l6l6 of FIG. 12;

FIG. 17 is a view taken along the line l717 of FIG.

FIG. 18 is a partially sectional view taken along the line 18-18 of FIG.1;

FIGS. 19 and 19A are schematic representations of portions of thepneumatic control circuit of the machine;

FIG. 20 is a representation of the shoe assembly as it is supported inthe machine at the beginning of a machine cycle;

FIG. 20A is a view taken along the line 20A20A of FIG. 20; and

FIG. 21 is a veiw showing the nozzles as they appear when applyingcement into the corners between the side portions of the upper marginand the corresponding portions of the insole periphery.

DESCRIPTION OF THE PREFERRED EMBODIMENT The operator is intended tostand in front of the machine as seen FIG. 1 and to the left of themachine as seen in FIG. 3. Directions extending toward the operator(right to left in FIG. 3) will be designated as forward and directionsextending away from the operator (left to right in FIG. 3) will bedesignated as rearward. The front of the machine is closest to theoperator and the back of the machine is furthermost from the operator.

Referring to the FIGS. 1 and 4, the machine includes a sleeve 10 that isfixedly mounted to a stationary bracket 12. A bar 14 is movably mountedin the sleeve 10 for heightwise movement. An air operated motor 16, thatis secured to the bracket 12, has an upwardly extending piston rod 18that is secured to the bottom of the bar 14, whereby the motor 16 caneffect heightwise movement of the bar 14. A last pin 20 is mounted tothe top of the bar 14.

Referring to FIGS. 1 and 4-6, a bracket 22, secured to the front of thebar 14, has a plate 24 that is received in a clevis formed at the backof a mount 26. A pin 28 pivotally mounts the mount 26 to the plate 24for lateral swinging movement about the heightwise extending axis of thepin 28. A column 30 is secured to an extends upwardly of the mount 26and a toe rest 32 is mounted to the top of the column 30. The mount 26,the column 30 and the toe rest 32 form a toe rest assembly. The toe rest32 is located in front of the last pin 20. A pair of wings 34 aresecured to the sides of the plate 24 and extend forwardly thereof onopposite sides of the mount 26. A cam 36 is threaded onto a screw 38that is rotatably mounted in the mount 26 so that the forward-rearwardposition of the cam 36 in the mount 26 can be adjusted by rotating aknob 39 that is secured to the front of the screw 38. The sides of thecam 36 are adapted to engage the wings 34 to limit the extent ofswinging movement of the mount 26, together with toe rest 32, about theaxis of the pin 28. An air actuated motor is mounted to each wing 34 andeach motor 40 has a piston rod 42 that extends toward the mount 26.

The last pin 20 and the toe rest 32 consitute a shoe support 43. H

Referring to FIGS. 1 and 3, a platform 44, located rearwardly of thelast pin 20, has a gib 46 secured thereto that slidably receives a slide48 for forwardrearward movement. A mount 50is secured to the slide 48and a downwardly extending hold-down 52 is secured to the front of themount 50. An air actuated motor 54, mounted to platform 44, has a pistonrod 55 that is secured to the slide 48 whereby the motor 54 canueffectforward-rearward movement of the holddown 52.

Duplicate sets oflasting units'56 are located on opposite side of theshoe support 43, the left set of lasting units 56 in FIG. 1 being drawnin and only the outline of the right set of-lasting units 56 being shownin FIG. 1.

Referring to FIGS. land 2, each set of lasting units 56 is mounted forinward-outward movement on a table 58. An air actuated motor 60, mountedto each table 58, has a piston rod 62 that is secured to a base 64 of a.set of lasting units 56 to thereby enable the motors to effectinward-outward movement of the sets of lastingunits 56. A bolt 66 ismounted to each base 64 so as to be in registry with a flange 68 mountedto each table 58 and in registry with a valve 70 mounted in each flange68.

Referring to FIGS. 2 and 7, each set of lasting units 56 is formed of aplurality of lasting units 72 located side by side that are mounted to asupport 74 that is secured to and is located above a base 64. A flange76 for each lasting unit 72 is secured to and extends upwardly o fasupport 74 and threadedly receives a bolt 78. Each bolt 78 extendsthrough an outer slide bracket 80, forming a part of a lasting unit 72,that is slidably mounted to a support 74 for inward-outward movement.Each lasting unit 72 includes an inner slide bracket 82 that is mountedto a support 74 for inwardoutward movement. A knob 84 is pinnedto'theouter end 86 of each bolt 78, the outer ends 86 being of smallerdiameter than the threaded portions of the bolts 78. The brackets arelocated between the shoulders located at the juncture of the larger andsmallerdiamtered portions of the bolts 78 and shoulders formed at theinner ends of the knobs 84. Due to the connection between the outerbrackets 80 and the inner brackets 82, described below, rotation of theknobs 84 in one direction or the other will cause inward or outwardmovement of the brackets 80, 82 along the supports 74 and thus causeinward or outward movement of the lasting units 72.

An'a'ir operated motor 88 is pivoted to. each outer bracket 80 andextends inwardly thereof. The piston rod 90 of each motor 88' is pivotedby a pin 92 to the middle of a lever 94. Each lever 94 has an upper limb96 and a lower limb 98, the limbs extending inwardly of the pin 92. Eachlimb 98 is pivoted by a pin 100 to a lever 102. The bottom of each lever102 is pivoted by a pin 104 to a block 106 for inward-outward movementabout the axis of the pin 104. Each block l06 is pivoted for heightwisemovement to an inner slide bracket 82 by a pin 108. A shaft 110, mountedto an upstanding from each bracket 82 inwardly of its associated pin108, extends through its associated block 106..Com-

'pression springs 112 are entwined about the shafts and extend betweenthetops ofthe blocks 106 and collars 114 mounted to the tops of theshafts 110. The springs 112 yieldably urge the blocks 106 downwardlyabout the axes of the pins 108 to positions wherein the bottoms of theblocks 106 engage collars 116 that are mounted to the shafts 110 beneaththe blocks 106.

A lasting instrumentality 118 is anchored to each block 106 by bolts120. Each lasting instrumentality 118 is formed of three. plies, theouter ply being an outer presser strap 122, the middle ply being aninner presser strap 124, and theinner ply being a lasting strap 126. Thestraps 122, 124 and 126 are made of an elastic, flexible'and deformablematerial such as urethane. The straps 122, 124 and 126 respectively havebottom segments 122a, 124a and 126a that are rigid by virtue of beingsecured to the block 106 by the bolts 120. The top of each lasting strap126 is formed into a thickened relatively rigid top segment l26b. Themeddle segment 126a of the lasting strap 126, between the bottomsegment126a and the top segment 126b, is flexible, deformable'andstretchable. I

The top of each inner presser strap 124 is formedinto a thickenedrelatively rigid top segment 124b that is lo- I cated below itsassociated lasting strap top segment 126b.'The middle segment 124c ofthe inner presser strap 124, between the bottom segment 124a andthe topsegment 124b, is flexiable, deformable and stretchable. 1

The top of each outer presser strap 122 is formed into a thickenedrelatively rigid top segment 122b that is located below its associatedinner presser strap top segment l24b. The middle segment l22c of theouter presser strap 122, between the bottom segment 122a and the topsegment 122b, is flexible, deformable and stretchable.

A lug 128, embedded in the outer presser strap top segment 122b, has apin 130 mounted thereto that is slidably received in a slot 132 formedat the top of each lever 102.

A Iug 134, embedded in the inner presser strap top segment 124b, ispivoted by a pin 136 to a link 138, and each link 138 is pivoted by apin 140 to the top of its associated limb 96. I

An air operated motor 142 is associated with each lastinginstrumentality 118. Each motor 142 is pivoted to a bracket 144 that issecured to the top of each outer bracket 80. The motors 142 extendinwardly of the brackets 144. A socket 146 is embedded in each lastingstrap top segment 1261). Each socket 146 rotatably receives a ball 148that is mounted to the inner end of the piston rod 150 of its associatedmotor 142 to thereby provide a flexible connection between the pistonrods I 150 and the lasting strap top segments ,126b.

As can be seen in FIG. 2, the lasting straps 126 in each of the sets oflasting units 56 are separated from each other from their bottoms up topoints 152 that are approximately level with the bottoms of the topsegments l24b of the inner presser straps 124 and are integral above thepoints 152 in the region 153.

Referring to FIGS. 3 and 8, a pair of front posts 154 and a pair of backposts 156 are upstanding from the platform 44. The posts 154 and 156 arelocated on opposite sides of the platform 44 and a pair of slide rods158 are secured to and extend between each set of posts 154 and 156 soas to be located on opposite sides of the platform 44 and so as toextend in forwardrearward directions. A bearing 160 is slidably mountedon each slide rod 158 for forward-rearward movement and a slide plate162 extends between the bearings 160 and is secured to bearing blocks164 that are mounted to each of the bearings 160.

An air operated motor 166 is pivoted to a post 168 that extends upwardlyof the back of the platform 44. The motor 166 extends forwardly of thepost 168 and has a forwardly extending piston rod 170 that is pivoted bya pin 172 (FIG. 9) to a link 174 between the ends of this link. One endof the link 174 is pivoted by a pin 176 to the front of a link 178, theback of the link 178 being pivoted to a post 180 that extends upwardlyof the platform 44 forwardly of the post 168. The link 174 extendsrearwardly of the pin 176 and laterally towards a side of the platform44, and the end of the link 174 remote from the pin 176 is pivoted to apost 182 that extends upwardly of the link 174 and is secured to abearing block 164.

Referring to FIGS. 9 and 11, a projection 184 extends inwardly of thebottom of a post 186 that depends from a bearing block 164. A value 188,mounted to the projection 184, has a forwardly directed valve stem 190that is spring urged forwardly by the conventional spring in the valve188 so as to urge the valve stem 190 against a valve actuating rod 192that is pivoted to the projection 184 for forward-rearward swingingmovement about the axis of a pin 194. The valve stem 190 urges the rod192 forwardly about the axis of the pin 194 to a position wherein thefront of the rod 192 engages a stop pin 196 that is upstanding from theprojection 184.

Referring to FIG. 11, a column 198 is mounted in the machine adjacentthe front posts 154 for forwardrearward adjustment by means that are notshown. A support 200 extends rearwardly of this column. An air actuatedmotor 202 is pivoted to a clevis 204 mounted to the support 200 and thepiston rod 206 of the motor 202 extends rearwardly of this motor. Thetop of a bar 208 is pivoted to a clevis 210 that is secured to the backof the piston rod 206. The bottom of the bar-208 is so pivoted to theback of the support 200 that a stop lug 212 extends below the support200 in alignment with the outer end of the rod 192 that is remote fromthe pin 194.

Referring to FIG. 12, a cement pot 214 is mounted to the slide plate 162for forward-rearward movement therewith. The cement pot includes afunnel 216 into which solid granules of thermoplastic cement is suppliedand a storage chamber 218 into which the solid cement gravitates fromthe funnel 216 and in which the cement is melted by heating means (notshown). The molten cement gravitates from the chamber 218 through apassage 220 and an orifice 222 in a hollow sleeve 224 into a bore 226forming the hollow interior of the sleeve 224. The sleeve 224 is mountedto the cement pot 214. An air operated motor 228, also mounted to thecement pot 214, has a downwardly depending piston rod 230 to which isattached a downwardly depending plunger 232 that is slidable in the bore226. An orifice 234 in the bottom of the sleeve 224 has a valve seat 236formed thereon that is cooperative with a ball valve 238 to close theorifice 234 in response to upward movement of the plunger 232 in themanner described below. The ball valve normally rests on a supportmember 240 that is mounted to the cement pot 214 so that communicationis provided between the orifice 234 and a passage 242 located below theorifice 234.

Referring to FIGS. 12 and 13, a prong 244 is secured to and extendsdownwardly and forwardly of the cement pot 214. A block 246 is pivotedto a post 248 extending upwardly of the front of the prong 244 forswinging movement about the upright axis of the post 248. A projection250 (FIG. 8) extends laterally of each side of the block 246 and astabilizer bolt 252 is secured to each projection 250 with a head 254 ofeach bolt 252 extending rearwardly of its associated projection 250. Asshown particularly in FIGS. 8 and 10, a pair of single acting springreturn airoperated motors 256 are so mounted to the slide plate 162 thattheir forwardly directed piston rods 258 are in alignment with the boltheads 254.

A pair of aligned spindles 260 (FIG. 13) are mounted for swingingmovement about a horizontal axis in projections 262 of the block 246,the spindles having extensions 264 that extend outwardly of the block246. A heightwise extending spindle 266 (see FIGS. 13 and 14) isrotatably mounted in each spindle extension 264 and a nozzle carrier 268is mounted to an extension 270 of the spindle 266 so as to extendforwardly thereof. A nozzle holder 272 is mounted to the front of eachnozzle carrier 268 and a nozzle 274 (FIG. 15) is mounted to and dependsdownwardly of each nozzle holder 272. Interconnected passage means 276in the cement pot 214, the prong 244, the block 246, the post 248, thespindles 260, the spindle extensions 264, the spindles 266, the nozzlecarriers 268, the nozzle holders 272 and the nozzles 274 providecommunication for the molten cement between the passage 242 and passages278 (FIG. 15) located in each of the nozzles 274. Strategically locatedelectric cartridge heaters, such as the heaters 280 shown in FIGS. 14and 15, serve to maintain the cement that is in the passage means 276and the passages 278 molten. A check valve 282 (FIG. 15) in each nozzleholder 272 yieldably blocks the flow of cement through the passage means276.

Each spindle extension 270 has a bar 284 (FIGS. 12-14) extendingrearwardly thereof that has a bar 286 depending from its back end. Eachbar 286 is mounted to a yoke 288. One of the'yokes 288 is secured to thecylinder 290 (FIG. 16) of an air operated motor 292 and the other yoke288 is secured to the piston rod 294 of this motor. As described below,the operation of the motor 292 serves to swing the nozzle carriers 268and the bars 284 about the axes of the spindles 266. The extent ofoutward movement of the bars 284 and the extent of inward movement ofthe nozzle carriers 268 is determined by the engagement of the bars 284with stop bolts 296 that are located outwardly of the bars 284 and aremounted to bars 298 that in turn are secured to their associated blockextensions 264.

A rod 300 (FIG. 10) attached to an extending rearwardly of eachprojection 250 of the block 246 has a post 302 depending from its back,and an air operated motor 304 is pivoted to the bottom of each post 302.A lug 306, depending downwardly of and connected to each spindleextension 264, is pivoted to a clevis 308 that is secured to the pistonrod 310 of its associated motor 304, the piston rods 310 projectingforwardly of the motors 304.

1. A cement applying mechanism comprising: support means for supportingbottom - up a shoe assembly that includes a last having an insolelocated on its bottom and an upper mounted thereon, at least one endportion of the margin of the upper having been wiped against the insoleand an unwiped portion of the upper margin extending rearwardly of saidwiped end portion and extending upwardly of the corresponding portion ofthe insole periphery; a nozzle, located above the shoe assembly, mountedfor forward - rearward movement; yieldable drive means connected to thenozzle and actuable to effect said forward - rearward movement; cementextruding means actuable to extrude cement through the nozzle; means forinitially locating the nozzle with the cement extruding means inunactuated condition in a starting position in the corner between saidunwiped margin portion and the corresponding portion or the insoleperiphery a particular distance rearwardly of the boundary between saidwiped and unwiped margin portions release means actuable to thereafterenable the yieldable drive means to move the nozzle forwardly while thenozzle stays in said corner with the cement extruding means remaining inunactuated condition until the nozzle forward movement is arrested dueto the arrival of the nozzle at said boundary; reversing means actuableto cause the drive means to thereafter move the nozzle rearwardly whilethe nozzle stays in said corner until the nozzle arrives at a desiredlocation along said unwiped margin portion; means for actuating saidreversing means a predetermined time after the actuation of said releasemeans which time is not less than the time required for the nozzle tomove through said particular distance; and means for actuating thecement extruding means during substantially the entire rearward movementof the nozzle to cause cement to be extruded through the nozzle intosaid corner during substantially the entire rearward movement of thenozzle.
 2. The mechanism of claim 1 wherein the means for actuating saidrversing means comprises: time delay means actuable concomitantly withthe actuation of said release means, said time delay means beingeffective a predetermined time after its actuation to actuate thereversing means.
 3. The mechanism of claim 2 further comprising: meansfor causing the drive means to initially retain the nozzle in an initiallocation that is rearward of the said starting position; an actuatingmember connected to the nozzle for forward movement therewith; a stopmember located forwardly of the actuating member when the nozzle is insaid initial location; means mounting the stop member for movementbetween a first position wherein it is in registry with the actuatingmember and a second position wherein it is out of registry with theactuating member; means for initially retaining the stop member in saidfirst position; means for initially retaining the nozzle in an upper andinner position wherein the nozzle is spaced above the insole and isinward of the insole periphery; and means for thereafter causing thedrive means to move the nozzle forwardly until the actuating memberengages the stop member; wherein said means for initially locating saidnozzle in said starting position comprises: nozzle shifting meansresponsive to the engagement of the actuating member with the stopmember to move the nozzle downwardly and outwardly into said corner insaid starting position; wherein said release means comprises: means,operative after the actuation of said nozzle shifting means, to effect amovement of the stop member to said second position; and wherein saidtime delay means comprises: circuit means energizable concomitantly withthe movement of the stop member to said second position actuable tooperate the reversing means and a time delay mechanism in said circuitmeans effective to delay the operation of the reversing means apredetermined time after the energization of the circuit means.